Revert "deskmirror - fix dangling reference to mirror by refcounting it"
Revert "deskmirror - fix dangling reference to mirror by refcounting it"

This reverts commit 5404adc54fb7f49b435e736e375bf7368321a1b0.

I'm strongly against adding refcounts/nullchecks to hide bugs which
are caused by failure to properly track object existence. let's try to avoid
this sort of thing in the future

tizenorg/platform.upstream.enlightenment,tasn/enlightenment,tasn/enlightenment,tasn/enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,rvandegrift/e